Genetic problems of some sedimentary manganese  carbonate  ores
By: by P.A. Mohr.
Series: Contributions from the Geophysical Observatory -- 5
Publisher: Haile Sellassie I University,  Faculty of Science
Published: 1900
Place of publication: Addis Ababa, Ethiopia
Language: eng
Number of pages: 22
Subjects: Manganese ores
Notes: Bibliography: p. 20-22.